@Junko: Speaking of IoT trend, how much in-depth analog expertise is needed for that?

The IoT is just a mirror-reflection on the rest of the world. Parts of it can be designed with off-the-shelf modules, in which case you don't really care if they are analog or digital so long as you know how to plug them together -- the trick comes when you are designing something from the bottom up -- and that something needs analog expertise -- at which point everyone starts running around in ever-decreasing circles shouting "Don't Panic!"